/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate$
 * $Rev$
 *
 * Version: @VERSION
 *
 * Requires: jQuery 1.2+
 */

(function($){
	
$.dimensions = {
	version: '@VERSION'
};

// Create innerHeight, innerWidth, outerHeight and outerWidth methods
$.each( [ 'Height', 'Width' ], function(i, name){
	
	// innerHeight and innerWidth
	$.fn[ 'inner' + name ] = function() {
		if (!this[0]) return;
		
		var torl = name == 'Height' ? 'Top'    : 'Left',  // top or left
		    borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right
		
		return this.is(':visible') ? this[0]['client' + name] : num( this, name.toLowerCase() ) + num(this, 'padding' + torl) + num(this, 'padding' + borr);
	};
	
	// outerHeight and outerWidth
	$.fn[ 'outer' + name ] = function(options) {
		if (!this[0]) return;
		
		var torl = name == 'Height' ? 'Top'    : 'Left',  // top or left
		    borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right
		
		options = $.extend({ margin: false }, options || {});
		
		var val = this.is(':visible') ? 
				this[0]['offset' + name] : 
				num( this, name.toLowerCase() )
					+ num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width')
					+ num(this, 'padding' + torl) + num(this, 'padding' + borr);
		
		return val + (options.margin ? (num(this, 'margin' + torl) + num(this, 'margin' + borr)) : 0);
	};
});

// Create scrollLeft and scrollTop methods
$.each( ['Left', 'Top'], function(i, name) {
	$.fn[ 'scroll' + name ] = function(val) {
		if (!this[0]) return;
		
		return val != undefined ?
		
			// Set the scroll offset
			this.each(function() {
				this == window || this == document ?
					window.scrollTo( 
						name == 'Left' ? val : $(window)[ 'scrollLeft' ](),
						name == 'Top'  ? val : $(window)[ 'scrollTop'  ]()
					) :
					this[ 'scroll' + name ] = val;
			}) :
			
			// Return the scroll offset
			this[0] == window || this[0] == document ?
				self[ (name == 'Left' ? 'pageXOffset' : 'pageYOffset') ] ||
					$.boxModel && document.documentElement[ 'scroll' + name ] ||
					document.body[ 'scroll' + name ] :
				this[0][ 'scroll' + name ];
	};
});

$.fn.extend({
	position: function() {
		var left = 0, top = 0, elem = this[0], offset, parentOffset, offsetParent, results;
		
		if (elem) {
			// Get *real* offsetParent
			offsetParent = this.offsetParent();
			
			// Get correct offsets
			offset       = this.offset();
			parentOffset = offsetParent.offset();
			
			// Subtract element margins
			offset.top  -= num(elem, 'marginTop');
			offset.left -= num(elem, 'marginLeft');
			
			// Add offsetParent borders
			parentOffset.top  += num(offsetParent, 'borderTopWidth');
			parentOffset.left += num(offsetParent, 'borderLeftWidth');
			
			// Subtract the two offsets
			results = {
				top:  offset.top  - parentOffset.top,
				left: offset.left - parentOffset.left
			};
		}
		
		return results;
	},
	
	offsetParent: function() {
		var offsetParent = this[0].offsetParent;
		while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && $.css(offsetParent, 'position') == 'static') )
			offsetParent = offsetParent.offsetParent;
		return $(offsetParent);
	}
});

function num(el, prop) {
	return parseInt($.css(el.jquery?el[0]:el,prop))||0;
};

})(jQuery);

// The Offset Method
// Originally By Brandon Aaron, part of the Dimension Plugin
// http://jquery.com/plugins/project/dimensions
jQuery.fn.offset = function() {
	var left = 0, top = 0, elem = this[0], results;
	
	if ( elem ) with ( jQuery.browser ) {
		var	absolute     = jQuery.css(elem, "position") == "absolute", 
		    parent       = elem.parentNode, 
		    offsetParent = elem.offsetParent, 
		    doc          = elem.ownerDocument,
		    safari2      = safari && parseInt(version) < 522;
	
		// Use getBoundingClientRect if available
		if ( elem.getBoundingClientRect && !msie ) {
		
			box = elem.getBoundingClientRect();
		
			// Add the document scroll offsets
			add(
				box.left + Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft),
				box.top  + Math.max(doc.documentElement.scrollTop,  doc.body.scrollTop)
			);
		
			// IE adds the HTML element's border, by default it is medium which is 2px
			// IE 6 and IE 7 quirks mode the border width is overwritable by the following css html { border: 0; }
			// IE 7 standards mode, the border is always 2px
			if ( msie ) {
				var border = jQuery("html").css("borderWidth");
				border = (border == "medium" || jQuery.boxModel && parseInt(version) >= 7) && 2 || border;
				add( -border, -border );
			}
	
		// Otherwise loop through the offsetParents and parentNodes
		} else {
		
			// Initial element offsets
			add( elem.offsetLeft, elem.offsetTop );
		
			// Get parent offsets
			while ( offsetParent ) {
				// Add offsetParent offsets
				add( offsetParent.offsetLeft, offsetParent.offsetTop );
			
				// Mozilla and Safari > 2 does not include the border on offset parents
				// However Mozilla adds the border for table cells
				if ( mozilla && /^t[d|h]$/i.test(parent.tagName) || !safari2 )
					border( offsetParent );
				
				// Safari <= 2 doubles body offsets with an absolutely positioned element or parent
				if ( safari2 && !absolute && jQuery.css(offsetParent, "position") == "absolute" )
					absolute = true;
			
				// Get next offsetParent
				offsetParent = offsetParent.offsetParent;
			}
		
			// Get parent scroll offsets
			while ( parent.tagName && !/^body|html$/i.test(parent.tagName) ) {
				// Work around opera inline/table scrollLeft/Top bug
				if ( !/^inline|table-row.*$/i.test(jQuery.css(parent, "display")) )
					// Subtract parent scroll offsets
					add( -parent.scrollLeft, -parent.scrollTop );
			
				// Mozilla does not add the border for a parent that has overflow != visible
				if ( mozilla && jQuery.css(parent, "overflow") != "visible" )
					border( parent );
			
				// Get next parent
				parent = parent.parentNode;
			}
		
			// Safari doubles body offsets with an absolutely positioned element or parent
			if ( safari2 && absolute )
				add( -doc.body.offsetLeft, -doc.body.offsetTop );
		}

		// Return an object with top and left properties
		results = { top: top, left: left };
	}

	return results;

	function border(elem) {
		add( jQuery.css(elem, "borderLeftWidth"), jQuery.css(elem, "borderTopWidth") );
	}

	function add(l, t) {
		left += parseInt(l) || 0;
		top += parseInt(t) || 0;
	}
};